Denim Grain and Denim Charcoal Lightroom presets will add a denim blue tone to your photos. Denim Charcoal has a painterly effect and Denim Grain is more of a vintage look.
Lightroom presets are fully adjustable, so you can always adjust the final result. These presets work well in one click with many photos, but since every photo starts out differently you might need to make adjustments. Skin tones will look very blue and unrealistic, so these presets might not work for portraits unless this result is wanted.